| 6个不同水域刀鲚的形态特征与聚类分析 |
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| 引用本文： | 李 宇,冯广朋,张 涛,庄 平,宋 超,王海华,张燕萍,陈建华.6个不同水域刀鲚的形态特征与聚类分析[J].水生态学杂志,2022,43(6):116-123. |
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| 作者姓名： | 李 宇 冯广朋 张 涛 庄 平 宋 超 王海华 张燕萍 陈建华 |
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| 作者单位： | 江苏海洋大学海洋生命与水产学院,江苏海洋大学海洋生命与水产学院,中国水产科学研究院东海水产研究所,中国水产科学研究院东海水产研究所,中国水产科学研究院东海水产研究所,中国水产科学研究院东海水产研究所,江西省水产科学研究所,江西省水产科学研究所 |
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| 基金项目： | 国家重点研发计划重点专项（2019YFD0901205）；农业农村部政府购买服务项目（17210163）；江苏省“双创计划”团队项目；上海市科技兴农项目(2019-02-08-00-07-F01129). |
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| 摘 要： | 为研究刀鲚(Coilia nasus)不同水域形态特点和分布特点，运用多元统计方法对嵊泗群体(嵊泗海域)、长江流域群体(长江河口、长江泰州段与鄱阳湖)和湖泊群体(洪泽湖与巢湖)的刀鲚24个形态性状指标进行形态差异性分析。单因素方差分析结果显示,各群体之间除尾柄高外其余指标均存在显著差异(P<0.05)。聚类分析结果显示，长江流域群体与嵊泗群体之间形态最为接近相聚成一个类群，洪泽湖群体和巢湖群体分别形成两个类群，并运用差异系数检验显示，这三个类群之间形态多样性差异尚未达到亚种水平，属于同一种群。主成分分析提取了6个特征值大于1的形态指标，累积贡献率为75.784%，并发现各水域刀鲚形态差异表现在头胸部、腹部与尾部性状上。判别分析中，综合判别率为87.9%。研究结果表明，嵊泗群体和长江流域群体形态最为接近，说明嵊泗群体最有可能洄游进入长江；而湖泊群体与嵊泗群体、长江流域群体形态有显著差异，说明湖泊群体的刀鲚最有可能为淡水定居型长颌鲚。
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| 关 键 词： | 刀鲚 形态学 框架结构 多元分析 |
| 收稿时间： | 2021/10/20 0:00:00 |
| 修稿时间： | 2022/11/18 0:00:00 |
Morphological Characteristics and Cluster Analysis of Coilia nasus Populations from Six Different Waters |
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| LI Yu,FENG Guang-peng,ZHANG Tao,ZHUANG Ping,SONG Chao,WANG Hai-hu,ZHANG Yan-ping,CHEN Jian-hua.Morphological Characteristics and Cluster Analysis of Coilia nasus Populations from Six Different Waters[J].Journal of Hydroecology,2022,43(6):116-123. |
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| Authors: | LI Yu FENG Guang-peng ZHANG Tao ZHUANG Ping SONG Chao WANG Hai-hu ZHANG Yan-ping CHEN Jian-hua |
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| Institution: | Jiangsu Key Laboratory of Marine Biotechnology,Jiangsu Ocean University,Jiangsu Key Laboratory of Marine Biotechnology,Jiangsu Ocean University,East China Sea Fisheries Research Institute,East China Sea Fisheries Research Institute,East China Sea Fisheries Research Institute,East China Sea Fisheries Research Institute,Jiangxi Fisheries Research Institute,Jiangxi Fisheries Research Institute |
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| Abstract: | In order to study the morphological characteristics and distribution characteristics of Coilia nasus in different waters, multivariate statistical methods were used to analyze the morphological differences of 24 morphological traits of Coilia nasus in Shengsi population ( Shengsi sea area), Yangtze River population (Yangtze River estuary, Taizhou section of Yangtze River and Poyang Lake) and lake population (Hongze Lake and Chaohu Lake). The results of one-way analysis of variance showed that all the morphological indexes were statistically significant (P < 0.05) except the height of caudal stalk. The cluster analysis results showed that the morphology between the Yangtze River Basin population and Shengsi population was closest to each other and clustered into one group. The population of Coilia nasus in Hongze Lake and Chaohu Lake formed two groups. The difference coefficient test showed that the difference in morphological diversity among the three groups had not yet reached the subspecies level, belonging to the same population. Principal component analysis extracted six morphological indicators with eigenvalues greater than 1, and the cumulative contribution rate was 75.784 %. It was found that the morphological differences of Coilia nasus in each water area were manifested in head and chest, abdomen and tail traits. In discriminant analysis, the comprehensive discriminant rate was 87.9 %. The results show that Shengsi group is the closest to the Yangtze River basin group, indicating that Shengsi group is most likely to migrate into the Yangtze River. The morphology of lake population was significantly different from that of Shengsi population and Yangtze River population, indicating that the Coilia nasus of lake population was most likely to be freshwater settled Coilia nasus. |
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| Keywords: | Coilia nasus morphology truss network multivariation analysis |
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